RE: [RTTY] KAM Plus and MMTTY

[Richard Ferch <ve3iay@rac.ca>]

Dave,

I think Jim's main point is that you cannot use MMTTY to control the KAM; 
MMTTY's function is to replace the KAM, not to control it. To control the 
KAM you need other software instead of or in addition to MMTTY.

In more detail: To transmit RTTY, you can use either the KAM or MMTTY, but 
not both simultaneously. When transmitting, the KAM accepts incoming text 
on a serial cable, converts it to Baudot and passes the encoded signal to 
the radio either in audio form (AFSK) or as an FSK keying signal. To use 
the KAM, Pete needs software to accept input text from the keyboard and 
send it to a serial port connected to the KAM. MMTTY is not that kind of 
software; it performs the same functions as the KAM, not the 
keyboard-to-serial function that Pete needs to control the KAM.

On receive, you can use both the KAM and MMTTY simultaneously, but in 
parallel, not in series. As Dave has pointed out, simultaneous parallel 
decoding often gives better results than either the KAM or MMTTY on its 
own. If you use a Y-connector to present the same audio signal to both the 
computer's sound card and the KAM, MMTTY can display the decoded text 
directly on the screen, but to see the text as decoded by the KAM, you need 
software that will take the text from the KAM's serial cable and display it 
in another screen window, and MMTTY is not the right software to do that.

If Pete wants to use the KAM together with MMTTY, he needs additional 
software. As it happens, many of the programs that use MMTTY as an RTTY 
"engine" can also control a TNC like the KAM, and many of them can use both 
MMTTY and a KAM simultaneously in dual receive windows. Such software 
includes N1MM Logger, RCKRtty, WinWarbler and WriteLog.

73,
Rich VE3IAY



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